No cache version.
Caching disabled. Default setting for this page:enabled (code LNG204)
If the display is too slow, you can disable the user mode to view the cached version.
xdiff_string_diff
(PECL xdiff >= 0.2.0)
xdiff_string_diff — Make unified diff of two strings
Description
$old_data
, string $new_data
[, int $context
= 3
[, bool $minimal
= FALSE
]] ) : string
Makes an unified diff containing differences between old_data
string and
new_data
string and returns it. The resulting diff is human-readable.
An optional context
parameter specifies how many lines of context should be
added around each change. Setting minimal
parameter
to true will result in outputting the shortest patch file possible (can take a long time).
Parameters
-
old_data
-
First string with data. It acts as "old" data.
-
new_data
-
Second string with data. It acts as "new" data.
-
context
-
Indicates how many lines of context you want to include in the diff result.
-
minimal
-
Set this parameter to
TRUE
if you want to minimalize the size of the result (can take a long time).
Examples
Example #1 xdiff_string_diff() example
The following code makes unified diff of two articles.
<?php
$old_article = file_get_contents('./old_article.txt');
$new_article = $_REQUEST['article']; /* Let's say that someone pasted a new article to html form */
$diff = xdiff_string_diff($old_article, $new_article, 1);
if (is_string($diff)) {
echo "Differences between two articles:\n";
echo $diff;
}
?>
Notes
Note:
This function doesn't work well with binary strings. To make diff of binary strings use xdiff_string_bdiff()/xdiff_string_rabdiff().
English translation
You have asked to visit this site in English. For now, only the interface is translated, but not all the content yet.If you want to help me in translations, your contribution is welcome. All you need to do is register on the site, and send me a message asking me to add you to the group of translators, which will give you the opportunity to translate the pages you want. A link at the bottom of each translated page indicates that you are the translator, and has a link to your profile.
Thank you in advance.
Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-xdiff-string-diff.html
The infobrol is a personal site whose content is my sole responsibility. The text is available under CreativeCommons license (BY-NC-SA). More info on the terms of use and the author.
References
These references and links indicate documents consulted during the writing of this page, or which may provide additional information, but the authors of these sources can not be held responsible for the content of this page.
The author This site is solely responsible for the way in which the various concepts, and the freedoms that are taken with the reference works, are presented here. Remember that you must cross multiple source information to reduce the risk of errors.